669594 has 8 divisors (see below), whose sum is σ = 1339200. Its totient is φ = 223196.

The previous prime is 669577. The next prime is 669607. The reversal of 669594 is 495966.

It is a sphenic number, since it is the product of 3 distinct primes.

669594 is an admirable number.

It is a super-2 number, since 2×669594² = 896712249672, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669594.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55794 + ... + 55805.

It is an arithmetic number, because the mean of its divisors is an integer number (167400).

2⁶⁶⁹⁵⁹⁴ is an apocalyptic number.

669594 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669594 is a wasteful number, since it uses less digits than its factorization.

669594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111604.

The product of its digits is 58320, while the sum is 39.

The square root of 669594 is about 818.2872356331. The cubic root of 669594 is about 87.4857228406.

It can be divided in two parts, 669 and 594, that multiplied together give a triangular number (397386 = T₈₉₁).

The spelling of 669594 in words is "six hundred sixty-nine thousand, five hundred ninety-four".